Sucker-rod wrench and elevator



(No Model.)

W. S. ROBERTS.

STICKER ROD WRENCH AND ELEVATOR.

No. 246,342. Patented Aug. 30,1881.

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WILLIAM S. ROBERTS, OF BRADFORD, PENNSYLVANIA.

SUCKER-ROD WRENCH' AND ELEVATOR.

SPECIFICATION formingpart of Letters Patent No. 246,342, dated August30, 1881. Application filed June 14, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM S. BoBER'rs, of Bradford, McKean county,Pennsylvania, have invented new and useful Improvements in Sucker-RodWrenches and Elevators; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings and the letters or figures'of reference markedthereon.

My invention relates to devices for handling oil-well sucker-rods whenputting them in or removing them from the well, which devices are knownas sucker-rod wrenches and elevators.

The tool consists of a wrench-head with trunnions or pintles on two ofits sides, opposite each other, the line of which is transverse thewrench opening or slot, to which pintles is pivoted a forked handle,having at its eX- tremity a swivel. hen the forked handle lieshorizontal with thewrench-head it can serve as the handle or lever ofthe wrench, and when turned in a vertical position it can serve as abail by which to lift the sucker-rod.

My invention consists in pro 'iding upon the wrench-head a. latch which,when the handle is used as a hail, will sufficiently close the slot toprevent the rod slipping out, and which, when the device is used as awrench, will fall back and leave free access for the shank of thesucker-d in the slot of thewrench-head.

My device is shown in the accompanying drawings, as follows: Figure 1shows the device in position to he used as a wrench. Fig. 2 shows it inposition to be used to draw up the suckerrods or lower them. Fig. 3shows an analogous construction.

The letters of reference indicate parts, as follows:

A is the handle; B, the wrenchhead; B, the opening or slot in thewrench-head; Z), the latch; to, the eccentric or cam on the handle formovingthe latch; S, the spring which keeps the latch back when notpushed forward by the cam.

It is not new to provide means upon such a device as is here underconsideration for holding the sucker rod in place when the deviceis usedas an elevator. This has been done by placing a finger on the handle A,which, when the handle is in a vertical position, will lie in front ofthe sucker-rod and prevent itslipping outof the slot B. This finger isliable to break off in usage.

My invention consists in providing a latch upon the head B which will bethrown outinto the opening B and prevent the rod slipping out when thehandle is in a vertical position. In Figs. 1 and 2 this latch is shownasa flat pivoted tongue lying in a recess, and projecting to one sidefar enough to be acted upon by the cam a on the handle when it is turnedup.

The operation of this device is fully shown in Figs. 1 and 2. The springS may be used or not, as desired. In the construction shown in Fig. 3the latch consists of aspring-bolt, b, which is operated upon by a earn,a. I consider these two forms as entirely analogous. Other analogousforms might be shown-such as a plate pivoted on the face of the head B,for instance; but I believe I have shown enough to fully illustrate myinvention.

What I claim as new is 1. The combination, within a sucker rod wrenchand elevator, ofa latch upon the wrench head, which is operated toforinan obstruction in the opening B when the handleA is turned up,substantially as and for the forth.

2. In a sucker-rod wrench and elevator, the combination of-the handle A,wrench-head B, latch 11, and cam a, substantially as set forth.

In testimony tha-tIclaim the foregoingI have hereunto set my hand thisth day of May, 1881.

purposes set W. S. ROBERTS.

Witnesses:

E. A. HEART, M. F. HALLEGK.

